Fuel-feeding device



May 29, 1923.

w. SPARKS FUEL FEEDING DEVICE Fild Dec. 11

iljil Patented May 29, N23.

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v JACKSON, MICHIGAN, ASSIGNOR TO THE SPABKS-WITMNG'EON OF JACKSON, MICHIGAN, A CORPORATION OF OHIO,

FUEL-FEEPING DEVICE.

Application filed December 11, 1920. Serial No. 430,005.

To all whom it may concern:

Be it known that 1, WILLIAM SPARKS, a citizen of the United States of America, and resident of Jackson in the county of J ack- 6 son, in the State of "chigan, have invented new and useful Improvements in Fuel-Feeding Devices, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description. This invention relates to certain improvements in fuel feeding devices, and is closely related to my co-pending application, Scr. No. 365,231, filed March 12, 1920.

Experience teaches that in the use of apparatus of this character in which a pumping device is directly connected to the cylinder of an internal combustion engine, tha't the burnt gases, floating carbon, etc. will pass from the cylinder through the connecting tube, or conduit, into the pumping device, collecting on the various parts of the apparatus, particularly the head of the pump piston, not only impeding the most efiicient operation of the device butat times making the gasolene or other liquid fuel black and dirty.

Further, the burnt gases and other products of combustion passing through into the connecting conduit heat the same to a so relatively high temperature, the variations in temperature resulting in condensation, which .in cold weather may freeze in the conduit, or the valve device controlling the conv duit, either preventing, or at least rendering ineflicient the operation of the device. The main object of the invention is to provide means for preventing, or partially preventing the passage of the burnt gases, floating carbon and other products of com- 4 bustion into the conduit, thereby avoiding undue heating of the tube with the resultant condensation, and eliminating the difiiculty arising as a result of these materials collecting on the operating parts of the device. Other objects and advantages relate to the details of construction, as will more fully appear from the following description taken in connection with the accompanying drawings, in which Figure 1 is a sectional view of the improved fuel feeding device.

Figure 2 is a view of the valve controlling communication between the engine cylinder and the pumpin device. 55 The tank an pumping apparatus disclosed are of similar form and construction to that illustrated in my co-pending application above identified. The structure consists of a tank -1-- a pumping device 2- arranged therein and connected by means of pipe 3-, with a source of fuel supply, and by means of conduit -4 with a cylinder of the engine. A; suitable valve 5-- as shown may be provided, actuated by a float 6- in accordance with the level of fuel in the tank -1 for controlling the operation of the pumping device by governing the flow of the motive fluid from the conduit -4 to the piston cylinder of the pump. The conduit -4 includes a device 7- which may, as shown, he at the end of the conduit, and may constitute the means for connecting the conduit to the engine cylinder -8.

This device -7 is so constructedeas to actually prevent communication between the pumping device and the engine cylinder at the time of the explosion within the cylinder, and as shown, it consists of two tubular parts --9- and -10 respectively adjustably connected as by threaded relation, and so constructed as to form between them a chamber in which a suitable valve, as the disk valve -1l, is movable. The lower end of the tubular part 9- constitutes a seat into contact with which the valve 11- is adapted to be moved by the pressure of the explosion within the cylinder to shut ofi communication between the pumping device and the cylinder at that time. 90

A spring 12- is located within the part 9. and 1s tensioned to normally hold the valve 11 from contact with the lower end of said part 9 to permit the passage of gas under pressure, from the cylinder through the radial recesses 13- formed in said disk, into the remaining portions of the conduit 4. and to the pumping device as to actuate the latter. The part 10- may be formed with a nipple 14- 100 adapted to be threaded into the engine cylinder.

The operation of the device will be readily understood. During the compression stroke of the piston in the cylinder, the gradually 105 compressed gas will pass through the radial recesses in the valve and into the art 9- and the remaining portions of t e conduit and operate the pump piston, the recesses being of sufficient depth so as not to be e11- 110 i an am the lower end of part 9, preventing the passage of the explosion beyondthat point. When the pressure in the cyllnder is reduced, the spring -12- opens the valve 11- to permit the passage of gas on the next compression stroke of the piston.

This construction of device prevents, or partially prevents. the passage of the prodnets of combustion into the pumping device by shutting 01f the communication of the pumping device with the cylinder from the moment the explosion takes place until the next compression stroke of the piston, and permits the tube -4- to be maintained at a. relatively low temperature, thereby avoiding condensation and the collecting of carbon and other products of combustion on the various parts of the apparatus.

Although I have shown and described a specific form of device as illustrative of my invention, it will be understood that various forms and constructions of devices may be utilized to effect the objects of this invention, and therefore, various changes ma be made in the details of construction and orm of the device, and by the substitution of mechanical equivalents without departing from this invention as set forth in the appended claims.

What I claim is:

1. A fuel feeding device comprising a pumping device, a tank for receiving liquid from the pumping device, a conduit connecting the pumping device to an engine cylinder, means actuated by the liquid in said tank for controllin the flow of motive fluid from the engine cylinder to the pumping device, and additional means for cutting 01% communication between the pumping device and the engine cylinder upon sudden expansion of the gases in the latter while permitting communication between the pumping device and the engine cylinder during the gradual compression of gas in the latter.

2. A fuel feeding device comprising a pumping device, a tank for receiving liquid from the pumping device, a conduit connecting the pumping device to an engine cylinder, means actuated by the liquid in said tank for controlling the flow of motive fluid from the engine cylinder to the pumping device and additional means for controlling a she flow of motive fluid through said conuit.

3. A. fuel feeding device comprising a pumping device, a tank for receiving liquid from the pumping device, a conduit connecting the pumping device to an engine cylinder, means actuated by the liquid in said tank for controlling the flow of motive fluid from the engine cylinder to the pumping device and means for shutting off communication between the pumping device and the engine cylinder instantly upon rapid expansion of the gases in said cylinder.

In witness whereof I have hereunto set my hand this 3rd day of December, 1920.

WILLIAM SPARKS.

Witnesses:

LILLIAN E. Wnmmmon, Roman R. Buss. 

